RAM).
In fact, what’s the difference between DVD-R and DVD+R, DVD-RW and DVD+RW?
And does anyone think DVD-RAM is useful?
Should I try to find a DVD-write which can read all DVD formats?

Maybe it’s a stupid question.
a) But is it true all DVD-writers can read CD and VCD (Video CD)?bNEW[/b] And is it true all DVD-writers support at least DVD+/-R, and

DVD+/-RW?

Which brand or model will you suggest me buying?
And why?

I would like the DVD-writer:

stable (or longer warranty period)

can read most discs correctly (and even lower-quality discs)
PS: I don’t know, but some DVD-players (stand-alone, not for computers) have problems

reading some discs while the discs is not corrupt or naytihng similar and can be read

by others.

writing speed doesn’t need to be too high (since I repfer to write discs at lower

speed)

the noise factor is unimportant (unless it is too loud)

Info about my computer:

my motherboard is A7N8X-X, only support up to 2*UDMA 133

I have 2 HDDs and 1 CD-RW currently. I think the DVD-writer will replace the CD-RW.

I don’t use any firmware

I use my DVD writers mainly for reading videos/audios, burning DVDs for

videos/audios, and for file storage & data backups.

[ver 2] NEW
5) Dual/double layer writing tech
I’ve heard about double-layer writables.
What is it? What does it do?
What benefits does it provide?
How expensive will a DVD writers be if I wish to have such technology?
Can a normal DVD player (standalone, not computer) read this DVD written by this

tech?

[ver 2] NEW
6) Region-code
As to region-code, I have a DVD-reader on my mobile computer.
It’s strange that I can set the region codes for 4 times only. I can never change it

afterward (even if I reformat my computer).
So if there’s any way that I can eliminate the DVD-region trouble, or have a DVD

writer which can read/write all DVDs with any region codes. It would be perfect.